2/7 = 3/5... first make both fractions have the same denominator so...
2/7 = 10/35 & 3/5 = 21/35 now...
10/35 + 21/35 = 31/35 which is your final answer since it can't be simplified.
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3/5+4/5=7/5=One and two fifths
One half is the biggest.
half of two equals onehalf of two + three fifths = 1 3/5 = 1.6
Two sevenths of 84 is 24.
Four fifths.